Pulp-refiner



H. F. STORRER.

PULP REFINER.

APPLICATION FILED SEPT.30. 1915- RENEWED MAY 29,1920. 1,346,27m Patented July 13, 1920..

2 SHEETS-SHEET l.

H. F. STORRER.

PULP REFINER.

APPLCATION FILED SEPT.30. l9l5. RENEWED MAY 29, 1920. Lgjyw Patented July 13, 1920.

2 SHEETS-SHEET 2.

i finer .for

HERMANN F. STORE/ER, NEW YORK, N.

Y., ASSIGNOR T J'. M. 'VOITH COMPANY,

INC., A CORPORATION OF NEW YORK.

PULP-REFINER.

Specification of Letters Patent, l

Patented July 13, 1920.

Application filed September 30, 1913, Serial No. 53,299. Renewed May 23, 1920. Serial No. 385,643.

To all whom t may concern Be it V'known that I, HERMANNF. STORRER, a citizen of the Republic of Switzerland, and residing in the city, county, and State of New-York, have invented a certain new and Improved Pulp-Rener, 0f which the following is a specification.

The present invention relates to a pulp repaper mills or the like and particularly to an improved method of adjusting the grind stones with relation toeach other, the object of my invention being to provide a simple and efficacious device acting solely upon the stationary stone and by which the approach of the stones can be adjusted as desired without altering the tension of the pressure spring and lat the same time permit the tension of thel pressure spring to be varied without altering the approach of the stones.

In the accompanying drawings,

Figure 1 is a longitudinal section through an apparatus in which my invention is ernbodied in one form;

' Fig. 2 is an enlarged section of the' details i of the adjusting mechanism; and

Fig. 3 is a broken elevation of the runner cup.

In the form here shown the present refiner comprises a base from which rise the standards 1 1 -and 12. The stationary.' casing 13 of the refiner is carried by the standard 12 and is formed in halves bolted together through.- marginal flanges 14.

. Within the casing are`arranged the grind stones 15 and 16, the latter being stationary, whilethe former is driven from the shaft 17 to the end of which is bolted the cup 18 in which therunner` stone is mounted.v The. shaft 17 may be driven in any suitable manner, as fory instance' by an electric motor mounted thereon, butfor the sake of simplicity I have here` shown merely a pair of pulleys 19 and 20, the] latter keyed to a shaft,., and the other idlefthereon in well understood 'mannen IThe pulp stock isy led through the inlet 22into the feed chamber 421 formed in the center of the stones and the refined material is discharged through ythe discharge passage 24 from the annular chamber 23 surrounding the stones. The cup 25, carrying the stationary stone 16, is provided with studs 26 engaging suitable stops on the casing 13 to prevent thev rotation of the stone, whileat the same time per- `nism comprises tion to force the mitting the latter to be'moved forward to approach vthe stone 15 as the working faces of the stones wear away. The cup carrying the runner 15v has its hub in the form of a spider, the plates of which are inclined so as to drive the stock into the feed chamber and, force it between the working faces :of the stones. v

The adjusting mechanism is confined to the stationary stone 16 so that it is unnecessary to disturb or vto. rearrange the drive connection tothe runner stone 15 on each adjustment as has heretofore been customary. 1 1 the formshowmthe adjusting mechaa. sleeve 27 externally threaded to engage-the tappedlbushing 28, carried by thecap 29 bolted to the boss 30 on the casing. :At its outer end this sleeve carries a hand wheel 31 by which it may be rotated inthe bushing, while at` its inner end it ,carries a thrust bushing 32 between which and the flange 33 on 'the hub of the cup 25 is interposed the thrustspring 34. When the hand wheel 31 is rotated in a direction to force the thrust bearing v32 in-` ward into `the casing, the tension of the spring 34 is increased and the pressure upon the pulp between the stones 15 and 16 correspondingly augmented. To adjust the appreach of the working faces of the stones toward each other, I provide a rod 35 having a threaded portion 36 which engages the tapped bushing 37 sleeve 27. This rod carries a hand wheel 38 at its outer end and a head 39. at its inner end against which the hub flange '33 of the When the Ahandle 38 is screwed in a direchead 39 inward into the casing, the -cup 25 is simultaneously forced in the same directionby the spring 34 thus approaching the faces of the stones closer together.

In order to protect the adjusting mechanism from the pulp stock within the cham- .ber 21, I provide a cap 41 inclosing the 4head 39 on the spindle 35 and bolted at 42 to the hub of the cup 25.

If it is desired merely to increase the in the outer end of the 34, the hand wheel 38 is'rotated in a direction to advance the spindle head 39 into the`- casing. If it is desired to approach the stones closer withoutchanging the pressure ofthe spring 34;, the hand wheels ,31 and 38 I (2) the adjustment is confined to the sta- 'tionary stone; (3) it is possible to conveniently use ark .electromotor directly connected to the driving shaft 17, la construc'- tion not hitherto practicable where the adjustments involve a displacement of the driving spindle; (4)' the approach of the stones may be adjusted without changing the adjustment of the pressure spring; (5)

Aeo

the pressure between thev stones may be varied without' altering the approach oi:` the stones; (6) the feed of the stock to the' stones` is improved bythe drive ofthe inclined spider plates of the runner cup style which the stock enters. .Y

I claim" as my invention 1. In a pulp \rener, a runner stone, a stationary stone coperating therewith, a carrier cup for said stationary-stone, having an axial sleeve, a pressure spring within said sleeve bearing against one end of the latter, a movable .abutment for the other end of saidspring within said sleeve, and means, for displacing said cup and spring abutment simultaneously or independently of each other to vary the position of said stonesl vwith relation to each other or. the

` pressure of the spring on the stationary stone:

\. an axial sleeve, a pressure spring within said sleeve bearing against one end. of the latter, amovable abutment for the other end of said spring within said sleeve,'al thrust,l i spindle passing through the sleeve and having a thrust head against which said sleeve c tionary stone cooperating therewith, a casing inclosing said stones and havingoncne sidev a hub coaxial therewith, a tapped bush in s aid hub, an abutment sleeve threaded into said bush, a pressure spring interposed between said sleeve and the stationary stone, a tapped bush in the outer end of said sleeve, a threaded rod screwed through said usleeve and bush and having athrust head engaged by said stationary stone, together with means for rotating said sleeve and rod in unison orseparately to adjust the approach of said stones or the thrust of the pressure' spring, substantially as described.

4. In .a pulp refiner, a runner stone, a stationary stone cooperating therewith, a springuthrusting said stationary stone to- .ward the runner stone, a sleeve carrying an abutment for one end of said spring, a spindle passing through said sleeve, a thrust head on said spindlev against which said stationary stone bears under the thrust of -said spring, and means for displacing said sleeve and spindle-either with relation to each other or together, for the purpose del,

scribed.

5. In a pulp refner, a centrally apertured runner stone,a cup carrying the same and having a spider hubV comprising inclined plates and means for leading the stock to said spider hub, whereby the stock is, forced of the stones. Y

- In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses.

' HERMANN Witnesses:

L. H, GRo'rE,' HUBERT HowsoN.

F. sToRREI. t

.by the inclined platesI of the latter into the Y /lfeed chamber and between the working faces 

